I mean, if they asked me for sources or so, Like "why are you getting this money? Are there any proving documents that you are getting this for ads ?" etc.. Since all is online, I have no proving documents other than taking screenshots for the account I have with the advertising company. And since my country is in chaos somehow, they are pretty strict about money coming from outside the country. Any suggestions ?
I liked your idea about taking screen shots from the advertising company. In the U.S. this would be an appropriate way to provide documented income.